The USS Enterprise-E has launched, with CaptainJean-Luc Picard in command. In addition to many familiar faces, the new ship also has some new crew members – among them, conn officerSean Hawk and security chief Linda Addison.

But soon Picard is devastated to learn that there's a saboteur on board – in the form of a Changeling infiltrator from the Dominion! Picard and his crew must learn who the Changeling replaced and stop it before it destroys the fleet's finest ship...